Overview
The SN74LV244APWRE4, produced by Texas Instruments, is an octal buffer and line driver with 3-state outputs. This device is part of the LV family and is designed to enhance the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. It operates over a wide voltage range from 2 V to 5.5 V, making it versatile for various applications. The device is organized as two 4-bit line drivers with separate output-enable (OE) inputs, allowing for precise control over data transmission.
Key Specifications
| Parameter | Min | Max | Unit | Conditions |
|---|---|---|---|---|
| VCC Supply Voltage | 2 | 5.5 | V | |
| Input Voltage | -0.5 | 7 | V | |
| Output Voltage | -0.5 | VCC + 0.5 | V | |
| Propagation Delay (tpd) | 6.5 | ns | VCC = 5 V | |
| Output Ground Bounce (VOLP) | < 0.8 | V | VCC = 3.3 V, TA = 25°C | |
| Output VOH Undershoot (VOHV) | > 2.3 | V | VCC = 3.3 V, TA = 25°C | |
| Junction Temperature (Tj) | -65 | 150 | °C | |
| Storage Temperature (Tstg) | -65 | 150 | °C |
Key Features
- Operates from 2 V to 5.5 V VCC.
- Inputs accept voltages up to 5.5 V.
- Specified from –40°C to +85°C and –40°C to +125°C.
- Maximum propagation delay of 6.5 ns at 5 V.
- Typical output ground bounce (VOLP) < 0.8 V at VCC = 3.3 V, TA = 25°C.
- Typical output VOH undershoot (VOHV) > 2.3 V at VCC = 3.3 V, TA = 25°C.
- Supports mixed-mode signal operation on all ports.
- Ioff supports partial-power-down mode operation.
- Latch-up performance exceeds 250 mA per JESD 17.
- ESD protection exceeds JESD 22 standards.
Applications
- Servers and network switches.
- LED displays.
- Telecom infrastructure.
- Motor-drive control boards.
- Buffering or incorporating delays between signals from microcontrollers or peripheral devices.
Q & A
- What is the operating voltage range of the SN74LV244APWRE4?
The SN74LV244APWRE4 operates from 2 V to 5.5 V VCC.
- What is the maximum propagation delay of the SN74LV244APWRE4?
The maximum propagation delay is 6.5 ns at 5 V VCC.
- What is the typical output ground bounce (VOLP) of the SN74LV244APWRE4?
The typical output ground bounce (VOLP) is less than 0.8 V at VCC = 3.3 V, TA = 25°C.
- Does the SN74LV244APWRE4 support mixed-mode signal operation?
Yes, it supports mixed-mode signal operation on all ports.
- What is the latch-up performance of the SN74LV244APWRE4?
The latch-up performance exceeds 250 mA per JESD 17.
- What are some common applications of the SN74LV244APWRE4?
Common applications include servers, network switches, LED displays, telecom infrastructure, and motor-drive control boards.
- How is the output-enable (OE) input used in the SN74LV244APWRE4?
The output-enable (OE) input controls the state of the outputs. When OE is low, the device passes data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state.
- What is the recommended storage temperature range for the SN74LV244APWRE4?
The recommended storage temperature range is from –65°C to 150°C.
- Does the SN74LV244APWRE4 support partial-power-down mode operation?
Yes, it supports partial-power-down mode operation through the Ioff circuitry.
- What is the ESD protection level of the SN74LV244APWRE4?
The ESD protection exceeds JESD 22 standards, including 2000-V Human-Body Model, 200-V Machine Model, and 1000-V Charged-Device Model).
